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105843
PORTABLE FORCED AIR HEATERS
D20N, D30N AND D44N MODELS
STORING,
TRANSPORTING,
OR SHIPPING
Note:
If shipping, transport companies re-
quire fuel tanks to be empty.
1. Drain fuel tank.
Note:
Some models have drain plug on
underside of fuel tank. If so, remove
drain plug to drain all fuel. If heater
does not have drain plug, drain fuel
through fuel cap opening. Be sure all
fuel is removed.
2. Replace drain plug if provided.
3. If any debris is noted in old fuel, add 1
or 2 quarts of clean kerosene to tank,
stir, and drain again. This will prevent
excess debris from clogging filters dur-
ing future use.
4. Replace fuel cap or drain plug. Prop-
erly dispose of old and dirty fuel. Check
with local automotive service stations
that recycle oil.
5. If storing, store heater in dry place.
Make sure storage place is free of dust
and corrosive fumes.
IMPORTANT:
Do not store kerosene over
summer months for use during next heating
season. Using old fuel could damage heater.
PREVENTATIVE
MAINTENANCE
SCHEDULE
How To
See Storing, Transporting, or Ship-
ping
See Air Output, Air Intake, and Lint
Filters, page 10
See Air Output, Air Intake, and Lint
Filters, page 10
See Fuel Filter, page 8
See Fan, page 13
WARNING: Never service heater
while it is plugged in, operating, or hot.
Severe burns and electrical shock can
occur.
Item
Fuel tank
Air output and
lint filters
Air intake filter
Fuel filter
Ignitor
Fan blades
Motor
How Often
Flush every 150-200 hours of
operation or as needed
Replace every 500 hours of
operation or once a year
Wash and dry with soap and
water every 500 hours of op-
eration or as needed
Clean twice a heating season
or as needed
No maintenance required
Clean every season or as
needed
Not required/permanently lu-
bricated
REMEDY
1. Check all electrical connections. See
Wiring Diagram, page 21
2. See Ignition Control Assembly, page 13
3. If fan does not turn freely, see Pump
Rotor, page 12
4. Replace ignition control assembly
5. Replace motor
POSSIBLE CAUSE
1. Bad electrical connection between motor
and ignition control assembly or ignition
control assembly and power cord
2. Blown fuse on ignition control assembly
3. Binding pump rotor
4. Defective ignition control assembly
5. Defective motor
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
WARNING: High voltage!
FAULT CONDITION
Motor does not start five seconds after heater
is plugged in (ON/OFF switch light remains
on)
ATTENTION:
The ignition control has built-in protection against current overloads. Use
the light in the ON/OFF switch to troubleshoot the fault condition.